National Indian Health Board. NIHB health reporter. National Indian Health Board.
Dyfyniad Arddull ChicagoNational Indian Health Board. NIHB Health Reporter. Denver, Co.: National Indian Health Board.
Dyfyniad MLANational Indian Health Board. NIHB Health Reporter. National Indian Health Board.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.